linux-kernel - [PATCH AUTOSEL 4.19 171/191] scsi: NCR5380: Use DRIVER

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Date:   Sat,  9 Nov 2019 21:39:53 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Finn Thain <fthain@...egraphics.com.au>,
        Michael Schmitz <schmitzmic@...il.com>,
        "Martin K . Petersen" <martin.petersen@...cle.com>,
        Sasha Levin <sashal@...nel.org>, linux-scsi@...r.kernel.org
Subject: [PATCH AUTOSEL 4.19 171/191] scsi: NCR5380: Use DRIVER_SENSE to indicate valid sense data

From: Finn Thain <fthain@...egraphics.com.au>

[ Upstream commit 070356513963be6196142acff56acc8359069fa1 ]

When sense data is valid, call set_driver_byte(cmd, DRIVER_SENSE).  Otherwise
some callers of scsi_execute() will ignore sense data.  Don't set DID_ERROR or
DID_RESET just because sense data is missing.

Tested-by: Michael Schmitz <schmitzmic@...il.com>
Signed-off-by: Finn Thain <fthain@...egraphics.com.au>
Signed-off-by: Martin K. Petersen <martin.petersen@...cle.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/scsi/NCR5380.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/drivers/scsi/NCR5380.c b/drivers/scsi/NCR5380.c
index 144bb0c2b3064..90136942f4882 100644
--- a/drivers/scsi/NCR5380.c
+++ b/drivers/scsi/NCR5380.c
@@ -513,11 +513,12 @@ static void complete_cmd(struct Scsi_Host *instance,
 
 	if (hostdata->sensing == cmd) {
 		/* Autosense processing ends here */
-		if ((cmd->result & 0xff) != SAM_STAT_GOOD) {
+		if (status_byte(cmd->result) != GOOD) {
 			scsi_eh_restore_cmnd(cmd, &hostdata->ses);
-			set_host_byte(cmd, DID_ERROR);
-		} else
+		} else {
 			scsi_eh_restore_cmnd(cmd, &hostdata->ses);
+			set_driver_byte(cmd, DRIVER_SENSE);
+		}
 		hostdata->sensing = NULL;
 	}
 
@@ -2265,7 +2266,6 @@ static int NCR5380_abort(struct scsi_cmnd *cmd)
 	if (list_del_cmd(&hostdata->autosense, cmd)) {
 		dsprintk(NDEBUG_ABORT, instance,
 		         "abort: removed %p from sense queue\n", cmd);
-		set_host_byte(cmd, DID_ERROR);
 		complete_cmd(instance, cmd);
 	}
 
@@ -2344,7 +2344,6 @@ static int NCR5380_host_reset(struct scsi_cmnd *cmd)
 	list_for_each_entry(ncmd, &hostdata->autosense, list) {
 		struct scsi_cmnd *cmd = NCR5380_to_scmd(ncmd);
 
-		set_host_byte(cmd, DID_RESET);
 		cmd->scsi_done(cmd);
 	}
 	INIT_LIST_HEAD(&hostdata->autosense);
-- 
2.20.1